Edward everard preston



Patented July 3, 1923.

"UNITED STATES 1ila-9.1118' EDWARD EVERARD rnEsroN, onnniciisriin, iiNen-Aiviig- 7 rnocnss nonv MAKING wenrizfuirfrnn'nnianrosvf' 1 Application inea oe'toberf2o,-ie2o. Asemi Ng. 418237.; 'Y

To all 'whom "it may Concern:

'Be it `known "that I, EDWARD EVERARD Pmisrorr,v a subject of the King of Great Britain, residing at 28 Melrose t have invented'y Improvements in Processes for Making vWarp Knitted Fabrics, of

which the following isa speciiic'ation.

This'inventi'on relates to improvements inj 10 warp knittedfabrics and has particular ref# erence to -fabrics produced on double "rib warp knitting machines.

The present invention knitting machines a fabric showing a uni'- forml face on both sides, said faces being formed of or pr'esentingstraight wales o-r ribs and said fabric being yproduced whilst employing only one row of threads.

that each knitted'loop of the fabric' contains,

two'threads.

According'to this invention only one row, or the equivalent of onerow, of 'fully vthreaded thread guides 'is employed and such guides may be carried fromone or more guide bars there being vtlie same 'number of thread `guides in operation as/there are needles in one bar even though more than one needle bar be employed. The threadV guides move simultaneously right or left in traverse as may be necessary and lap 40 each thread over two needles at each knitted ycourse so that the thread lapped by each guide overlaps in part the thread lapped by the guide next before it in the 'direction of traverse and is overlapped in part by the l thread lapped by the guide next behind it in the direction of traverse and each needle is thus caused to hold twol threads and a knitted loop containing two threads as heretofore is thus formed.

Any suitable movement of the threads a the back or backs of the single or double row of needles may be used in conjunction with the above described laps.

Also the improved fabric is' conveniently adapted for production on a machine fitted reet, Lei-.1 5 cester," in the county of'Leicester, England,Y

has forits' principal object to produce von double 'rib warp .Hitherto 'in the manufacture of lwarp knitted fabrics, showing auniform face offv` with knocking over lmeans ofthe-type de' scribed in British Patent No; A11969 of'191'-5,

and with rth`read letloff-'and'tensioning de-l y vice of theltypeidescribedin British Patent more fully describing ive-1329310 l `For tliep'urposeof Y this invention yreference will now". bei made to` the accompanying drawing wherein -tliefA y i agregame ie'viiiusfrate the prinpfilfea" e' resentthe i' front and'backrowsof needles respectively; R i

The threads d; alfa?, @t0-Jar@ Carriedlbyt' y i individualfguides', whicha'ref ,'ua'ted tof hyd y ture.' of the present invention. i

As shown herewith f and Y), re

their `threads in such a manner that"each" thread is lapped `over two yneedles at ea'ch mot-ion. ""l-heguides are equall-yfspacedand the vdistance between each pair 'of adjacent v guides' is equalto the distance'between each.-

pairV of adjacent needles.y

moved totheright and I'laid'v in positionoverjy thetwo needles ta, nl. "Simultaneously` tween the'needles n, and -nl'is movedto the threadV a2 commencing fromafposition lbey tween the needles al and n2 is moved in' lthe same direction and laid overy the needles 71,2

andina. The relative disposition and move'V if thread c1 commencing froin'apositionbeL`y 80 f right and laidiov'er the needles `nl'anfdr' and; f i

men'tof the lthreads with respect to one ani-.

other as above described yis repeated throughi' out the lengtho'fithe machineso that after @Maatsch the-emiI (Say al) vis'lapjenifty they@ thieaanxt. behind (a) over en@ medie (ad and by tliethread next before (c1/,2)v 'over the second needlev (n2), such two needles nland'` a2 being themselves lapped by thread a1.

The movement as above described con-lstitutes the principalfeature of this lin-A vention and may be used in conjunction with4 y 1 any convenient `movement of the threadsfbefl tweenthe needles. Also the threads may be moved to the right or` left over the front" 100'; the "needles such threads all move linthe and back needles provided `that when lapping same direction at the same time.

In the Aproduction lof thefabric shown inr4 i Fig. l, the threads move to the rightover i l l the front needles 7, swing through both sets 1 of needles, moveto the right'over the back needles swing through both sets of n'ee-y dles, move to .they left over the front needles, swing through both sets of needles, move to` the left ovei` the back` needles land then;l

rstneedles engaged by said thread in said row, again moving the threads across the f `knitted loop contains twe threads. Y l

4. A process Afor the production ofV warp' knitted fabrics on double rib warpknitting ymachines by the employment of thefsame number of threads `as there areneedlesin conveniently 'indicated by the arrows.

swing through to their starting position. The direction `of traverse of the threads 1s andilap the needles inthe other row, such latter needles being in turn independently actuatedto form their-loops,

I claim: a l -,1. A process forthe production of'warp l lknitted fabrics on double ribwarp knitting machines `employing a series of lthreads lwhich consists in engaging eachthread over afplurality of needles-in one row and in overlapping relation, moving all ofthe threads simultaneously across both rows and engaging each thread over a plurality of rneedles inthe second row in staggered relationto the engaged needles in the first row, f returningthe threads to the first rowand engaging each thread over a plurality `of needles in the iirst row in advance of the rows, and engaging eachthread over a plurality ofneedlesin the second row opposite ther needles iirst engaged in thefirst row.

2. A process for the production of warp knitted fabrics on double rib warp knitting machines byfjthe employment of the same numberzof threadsfas there are needles in one row which consists in causing'all of the threads to `be moved simultaneously in the same directio-nso as kto cause eachthreadto independently lap a plurality of needles in one row., then simultaneously moving all of the threads across both. rows of needles then y' moving all of said threads simultaneously in the first `mentioned direction sov as to cause each thread' to independently lap a plurality yof needles in the. other row, then moving -all, of the threads across the needles in an opposite kdirection to their first crossing` movement, thenmoving all of i thethreadssimultaneously ina direction 'opposite to the first mentioneddirection tov cause each thread to independently lap a different plurality of needles inV the first mentioned row, then moving all of said threads across said needles in the same directionas the first mentioned crossing movementthen moving vall of the needles in a direction opposite to the rfirst mentioned Vcli-- vrection to cause each" thread to independently lap different plurality of needles in the second mentioned row and inallyinov.- ing all .of said threads across said rowsin a directionopposite to the first crossingdi-V A3. A process for the production ondouble. rib knitting'machines ofa uniformly faced ,f fabric which consists in utilizing one row of threadr guides only andof causing each i'ndividual thread to be laid alternatively over` twoneedles of the front bar and thenover two needles. of the back bar ateach course` inA such a manner that each thread is in part lapped by the thread next lbefore and in part by the thread `next behind sol th one row which consists ink causing all of kthe threads to be moved simultaneously the same, direction so as tocause each thread to independently lap two needles first 'in the front rowfandl then inthe backrow, y andin c ausingeach thread to be in part lapped by behind so .that each knittedloop contains two threads. Y

EDWARD EVERARD 'PREsToN.

`Witnesses y ERIC POTTER, s FRANK AUGUs'rUs DADY, 

